For the total cos function gives as TC=15+3Q-1.5Q2+7.5Q3-45Q4. Compute the Tfc, Tvc, Afc, Avc and Atc

For the total cos function gives as TC=15+3Q-1.5Q2+7.5Q3-45Q4. Compute the Tfc, Tvc, Afc, Avc and Atc